ASTROSAT CZTI

Data Quality Report

Orbit 36683

Creation date: 2024-06-27T21:30:14.004388
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1T05_041T01_9000005234_36683cztM0_level2.evt modeM0/AS1T05_041T01_9000005234_36683cztM0_level2_quad_clean.evt
Size (bytes)394,125,12098,380,800
Size375.9 MB 93.8 MB
Events in quadrant A2,519,224661,112
Events in quadrant B3,030,118663,463
Events in quadrant C2,911,842670,301
Events in quadrant D3,134,626633,684

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0105403
B0120912
C0115472
D0125442

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5000110.220000%
B5000490.980000%
C50001142.280000%
D50001202.400000%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 7034 5001 0 0 0.00% 0.00%
B 7034 5001 37 37 0.53% 0.74%
C 7034 5001 85 85 1.21% 1.70%
D 7034 5001 101 101 1.44% 2.02%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 10 83 205970 1738.56 586 574 118.1
A 15 223 35195 293.05 586 574 118.1
A 13 254 9457 75.19 586 574 118.1
B 0 189 393769 3626.39 576 561 108.4
B 5 255 211547 1945.83 576 561 108.4
B 4 232 59497 543.54 576 561 108.4
C 0 10 417428 3173.52 569 574 131.4
C 15 214 230389 1749.59 569 574 131.4
C 0 207 18348 135.31 569 574 131.4
D 2 153 191797 1382.29 572 557 138.3
D 13 171 166696 1200.86 572 557 138.3
D 2 250 106687 767.11 572 557 138.3

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter